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DOI10.1002/2017WR022098
The Role of Frozen Soil in Groundwater Discharge Predictions for Warming Alpine Watersheds
Evans, Sarah G.1; Ge, Shemin2; Voss, Clifford I.3; Molotch, Noah P.4,5
2018-03-01
发表期刊WATER RESOURCES RESEARCH
ISSN0043-1397
EISSN1944-7973
出版年2018
卷号54期号:3页码:1599-1615
文章类型Article
语种英语
国家USA
英文摘要

Climate warming may alter the quantity and timing of groundwater discharge to streams in high alpine watersheds due to changes in the timing of the duration of seasonal freezing in the subsurface and snowmelt recharge. It is imperative to understand the effects of seasonal freezing and recharge on groundwater discharge to streams in warming alpine watersheds as streamflow originating from these watersheds is a critical water resource for downstream users. This study evaluates how climate warming may alter groundwater discharge due to changes in seasonally frozen ground and snowmelt using a 2-D coupled flow and heat transport model with freeze and thaw capabilities for variably saturated media. The model is applied to a representative snowmelt-dominated watershed in the Rocky Mountains of central Colorado, USA, with snowmelt time series reconstructed from a 12 year data set of hydrometeorological records and satellite-derived snow covered area. Model analyses indicate that the duration of seasonal freezing in the subsurface controls groundwater discharge to streams, while snowmelt timing controls groundwater discharge to hillslope faces. Climate warming causes changes to subsurface ice content and duration, rerouting groundwater flow paths but not altering the total magnitude of future groundwater discharge outside of the bounds of hydrologic parameter uncertainties. These findings suggest that frozen soil routines play an important role for predicting the future location of groundwater discharge in watersheds underlain by seasonally frozen ground.


英文关键词seasonally frozen ground snowmelt groundwater coupled modeling alpine
领域资源环境
收录类别SCI-E
WOS记录号WOS:000430364900011
WOS关键词COLORADO FRONT RANGE ; SPATIALLY DISTRIBUTED SNOWMELT ; CLIMATE-CHANGE IMPACTS ; ENERGY-TRANSPORT ; UNITED-STATES ; NIWOT RIDGE ; FLOW ; PERMAFROST ; CATCHMENT ; SURFACE
WOS类目Environmental Sciences ; Limnology ; Water Resources
WOS研究方向Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/20124
专题资源环境科学
作者单位1.Appalachian State Univ, Dept Geog & Environm Sci, Boone, NC 28608 USA;
2.Univ Colorado, Dept Geol Sci, Boulder, CO 80309 USA;
3.US Geol Survey, 345 Middlefield Rd, Menlo Pk, CA 94025 USA;
4.Univ Colorado, Inst Arctic & Alpine Res, Boulder, CO 80309 USA;
5.Univ Colorado, Dept Geog, Boulder, CO 80309 USA
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GB/T 7714
Evans, Sarah G.,Ge, Shemin,Voss, Clifford I.,et al. The Role of Frozen Soil in Groundwater Discharge Predictions for Warming Alpine Watersheds[J]. WATER RESOURCES RESEARCH,2018,54(3):1599-1615.
APA Evans, Sarah G.,Ge, Shemin,Voss, Clifford I.,&Molotch, Noah P..(2018).The Role of Frozen Soil in Groundwater Discharge Predictions for Warming Alpine Watersheds.WATER RESOURCES RESEARCH,54(3),1599-1615.
MLA Evans, Sarah G.,et al."The Role of Frozen Soil in Groundwater Discharge Predictions for Warming Alpine Watersheds".WATER RESOURCES RESEARCH 54.3(2018):1599-1615.
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